Raise drill assembly with two-piece planetary third reduction hu

Details Raise drill assembly with two-piece planetary third reduction hu Raise drill assembly with two-piece planetary third reduction hu

1997-03-04

1999-01-26

Marmor, Charles A.

Planetary gear transmission systems or components

Planetary gearing or element

475337, F16H 5708

Patent

active

058632727

ABSTRACT:
A two-piece planetary hub and output shaft for use in a planetary reduction gear drive assembly for a raise drill having a drive motor and a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft. The hub and shaft are formed as two major pieces, an upper hub and a lower output shaft which are rigidly interconnected by three planet gear shafts each engaging a hole in said hub and a recess in said lower output shaft. Such interconnection is suitably by taper lock bushing assemblies locking the shafts to both said hub and said shaft. Transfer of torque occurs essentially through the planet shafts and the hub, and transfer of load occurs essentially through the output shaft.

REFERENCES:
patent: 986588 (1911-03-01), O'Kelly
patent: 1386446 (1921-08-01), Talley
patent: 3220494 (1965-11-01), Cannon et al.
patent: 3454114 (1969-07-01), Poage
patent: 3490546 (1970-01-01), Hattrup et al.
patent: 3741381 (1973-06-01), Klein et al.
patent: 4468985 (1984-09-01), Nilsson
patent: 4721014 (1988-01-01), Ohkubo
patent: 5370194 (1994-12-01), Anderson et al.
patent: 5649879 (1997-07-01), Kusumoto et al.
Three photographs showing disassembled two-piece output shaft, interconnectable by six long bolts, which is made and sold by Strata Boring Services Division of RVC Mining Co., Alberton, South Africa, Dec., 1995.
B-LOC Corp of Monroe, NY, Information Sheet (one page) from Catalog, Dec., 1995, entitled Other B-LOC Shaft/Hub Connectors and including a drawing of Internal Shrink Discs.

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